Articles | Volume 18, issue 6
https://doi.org/10.5194/acp-18-3987-2018
https://doi.org/10.5194/acp-18-3987-2018
Research article
 | 
22 Mar 2018
Research article |  | 22 Mar 2018

Relationship between chemical composition and oxidative potential of secondary organic aerosol from polycyclic aromatic hydrocarbons

Shunyao Wang, Jianhuai Ye, Ronald Soong, Bing Wu, Legeng Yu, André J. Simpson, and Arthur W. H. Chan

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Subject: Aerosols | Research Activity: Laboratory Studies | Altitude Range: Troposphere | Science Focus: Chemistry (chemical composition and reactions)
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Cited articles

Altieri, K., Seitzinger, S., Carlton, A., Turpin, B., Klein, G., and Marshall, A.: Oligomers formed through in-cloud methylglyoxal reactions: Chemical composition, properties, and mechanisms investigated by ultra-high resolution FT-ICR mass spectrometry, Atmos. Environ., 42, 1476–1490, 2008.
Antiñolo, M., Willis, M. D., Zhou, S., and Abbatt, J. P. D.: Connecting the oxidation of soot to its redox cycling abilities, Nat. Commun., 6, 6812, 2015.
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Banerjee, D. K. and Budke, C. C.: Spectrophotometric determination of traces of peroxides in organic solvents, Anal. Chem., 36, 792–796, 1964.
Beelen, R., Raaschou-Nielsen, O., Stafoggia, M., Andersen, Z. J., Weinmayr, G., Hoffmann, B., Wolf, K., Samoli, E., Fischer, P., and Nieuwenhuijsen, M.: Effects of long-term exposure to air pollution on natural-cause mortality: an analysis of 22 European cohorts within the multicentre ESCAPE project, Lancet, 383, 785–795, 2014.
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Linkages between the chemical composition of PAH-derived SOA and oxidative potential (OP) were investigated under various atmospheric aging processes. Peroxides were found to be an insignificant OP contributor. Oligomerization and heterogeneous ozonolysis may enhance the OP of SOA. Mixing with Cu reduces the OP of PAH-derived SOA. Binding between redox-active Cu(II) and quinone was proved by NMR. Results highlighted the essential role of aerosol chemical composition in its health impact.
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